Struct tower::util::MapResult

pub struct MapResult<S, F> { /* private fields */ }

Service returned by the map_result combinator.

Implementations

impl<S, F> MapResult<S, F>

pub fn new(inner: S, f: F) -> Self

Creates a new MapResult service.

pub fn layer(f: F) -> MapResultLayer<F>

Returns a new Layer that produces MapResult services.

This is a convenience function that simply calls MapResultLayer::new.

Trait Implementations

impl<S: Clone, F: Clone> Clone for MapResult<S, F>

fn clone(&self) -> MapResult<S, F>

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<S, F> Debug for MapResult<S, F>

where S: Debug,

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<S, F, Request, Response, Error> Service<Request> for MapResult<S, F>

where S: Service<Request>, Error: From<S::Error>, F: FnOnce(Result<S::Response, S::Error>) -> Result<Response, Error> + Clone,

type Response = Response

Responses given by the service.

type Error = Error

Errors produced by the service.

type Future = MapResultFuture<<S as Service<Request>>::Future, F>

The future response value.

fn poll_ready(&mut self, cx: &mut Context<'_>) -> Poll<Result<(), Self::Error>>

Returns Poll::Ready(Ok(())) when the service is able to process requests.

fn call(&mut self, request: Request) -> Self::Future

Process the request and return the response asynchronously.